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Diagnostic Description
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Taxonomy. The genus Pheidologeton is assigned to the Carebara genus group of the tribe Solenopsidini (Bolton 2003). The genus was preliminarily reviewed by Yamane (2000). Workers of Vietnamese species have the following features.

Worker polymorphic; head in full-face view oval or subrectangular in minor, subrectangular or subtrapezoidal with roundly expanded vertexal lobe in media and major; frontal carina and antennal scrobe absent; median portion of clypeus not margined laterally by conspicuous carinae; posteromedian portion of clypeus relatively broadly inserted between frontal lobes; median clypeal seta absent; mandible triangular, 4-6 teeth on masticatory margin (teeth more rounded or worn in major); antenna 11-segmented, with 2-segmented club; eye small to moderate in size, sometimes consisting of only a few ommatidia; mesosoma in lateral view relatively slender in minor, but short and robust in major; promesonotum in lateral view usually well raised as a dome, much higher than anterodorsal border of propodeum; promesonotal suture completely absent dorsally in minor, but often conspicuous in major; posterior slope of promesonotal dome often with a prominence in major; metanotal suture weakly impressed dorsally; propodeal spine always present, but variable in size and shape; propodeum lobe low or almost absent; petiole consisting of anterior peduncle and node (but anterior peduncle ill defined from node in major); gastral shoulder distinct to indistinct.

The minor worker of Pheidologeton is similar to the minor of Oligomyrmex (for distinguished characters see under Oligomyrmex ) and the worker of Lophomyrmex (see under Lophomyrmex ).

Vietnamese species. One species has been described from Vietnam: varius Santschi (type locality: Ho Chi Minh City). Four additional species have been recognized by us from Vietnam: diversus (Jerdon) [= sp. eg-3] (Nam Cat Tien, Ninh Thuan, Pu Mat, Quang Tri, Tam Dao); trechideros Zhou et Zheng [= sp. eg-1] (Chua Yen Tu, Pu Mat, Tay Yen Tu, Van Ban); vespillo Wheeler [= sp. eg-2] (Ba Vi, Cuc Phuong, Tay Yen Tu); sp. eg-4 [= cf. affinis (Jerdon)] (Binh Chau-Phuoc Buu, Cuc Phuong, Nam Cat Tien, Pu Mat).

Bionomics. Pheidologeton diversus usually inhabits urban areas, bare lands, grasslands, forest edges and sparse forests. In contrast, the other Vietnamese species of Pheidologeton inhabit rather developed forests. Pheidologeton conlonies are extremely large and usually occur in soil under logs and stones. Permanent foraging trails, galleries and tunnels extend outward from the nests. A mass of foragers gather various kinds of food such as living and dead invertebrates, honeydew of homopterans and plant matter (nectar, fruits, seeds, etc).

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Eguchi, K., 2011, Generic synopsis of the Formicidae of Vietnam (Insecta: Hymenoptera), Part I - Myrmicinae and Pseudomyrmicinae., Zootaxa, pp. 1-61, vol. 2878
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Eguchi, K.
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Pheidologeton
provided by wikipedia EN

Carebara is a genus of ants in the subfamily Myrmicinae. It is one of the largest myrmicine genera with more than 174[2] species distributed worldwide in the tropics and the Afrotropical region. Many of them are very tiny cryptic soil and leaf litter inhabitants. They nest in rotten wood to which the bark is still adherent in the Afrotropical region, or may be lestobiotic nesting near other ant species. Some species are known to exist parasitically within termite nests. Little is known about the biology of the species. However, they are notable for the vast difference in size between queens and workers.[3][4]

Species

References

  1. ^ "Genus: Carebara". antweb.org. AntWeb. Retrieved 23 September 2013..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
  2. ^ a b Bolton, B. (2014). "Carebara". AntCat. Retrieved 28 June 2014.
  3. ^ Aldawood, A.; Sharaf, M.; Taylor, B. (2011). "First record of the myrmicine ant genus Carebara Westwood, 1840 (Hymenoptera: Formicidae) from Saudi Arabia with description of a new species, C. abuhurayri sp. n." ZooKeys. 92: 61–69. doi:10.3897/zookeys.92.770. PMC 3084545. PMID 21594112.
  4. ^ Wild, Alex (11 November 2015). "Ants use their flattened heads as doors to lock down their nests". New Scientist. Retrieved 18 November 2015.
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Pheidologeton: Brief Summary
provided by wikipedia EN

Carebara is a genus of ants in the subfamily Myrmicinae. It is one of the largest myrmicine genera with more than 174 species distributed worldwide in the tropics and the Afrotropical region. Many of them are very tiny cryptic soil and leaf litter inhabitants. They nest in rotten wood to which the bark is still adherent in the Afrotropical region, or may be lestobiotic nesting near other ant species. Some species are known to exist parasitically within termite nests. Little is known about the biology of the species. However, they are notable for the vast difference in size between queens and workers.

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